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Mountain Pine Beetles

joshua-franklin avatar
joshua-franklin
8 diapositives · 223 Views · Nov 05, 2014

Mountain Pine Beetles (Dendroctonus ponderosae) are small pests native to western North America, known for their devastating impact on pine forests. With a life cycle of one year, these beetles tunnel beneath tree bark to lay eggs, leading to tree decline, signified by yellowing or reddening foliage. Major outbreaks can kill millions of trees, with over 1.5 million acres affected in Colorado alone. Despite their destructive nature, the wood from attacked trees remains structurally sound for up to five years, providing opportunities for bio-fuel and construction materials.

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Mountain Pine Beetles
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  1. Mountain Pine Beetles Quick Facts Karen Trofka

  2. The Pine Beetle • Scientific Name: Dendroctonusponderosae • Size: 1/8 -1/3 inch • Native to forests in western North America • Have one year life cycles • Woodpeckers are their • natural predators Photo taken by Joseph Trofka

  3. Life Cycle • Female tunnels under bark of tree • Mate • Form vertical tube, or egg gallery, containing about 75 eggs • Eggs hatch and larva tunnel away from the egg gallery • Remain under the bark during the winter • Become pupae June-July • Mid-June to September leave trees as adults

  4. Out Breaks • Periodic out breaks can kill millions of trees • Current outbreak has killed 1.5 million acres of trees in Colorado • Pine beetles attack large and weak or stressed trees • Mainly affect ponderosa, lodgepole, scotch, and limber pinetrees • Affect Bristlecone and pinyon pines as well Photo taken by Joseph Trofka

  5. Range of Damage from Mountain Pine Beetles Map from http://snr.unl.edu/invasives/images/mountain%20pine%20beetle%20map.jpg

  6. What the Pine Beetles do to the Trees Tree become yellow or red 10 months After a successful attack Pitch tubes are created from the beetles tunneling Blue stain theon in inside of the wood is a fungus from adult beetles that help beetles kill the tree All photos taken by Joseph Trofka

  7. What can be Done with the Beetle Kill • Wood remains structurally sound until five years after attack and can be used for building • Used as fuel for pellet stoves • Bio-fuel • Firewood • Biochar Photo taken by Karen Trofka

  8. Works Consulted • "Can 'biochar' save the planet? " CNN Video. CNN. 30 Mar. 2009. biochar.org.       Web. 29 Mar. 2010. • Helman, Christopher. "Turning Dead Trees Into Green Heat." Forbes.com. N.p., 2 Sept. 2009. Web. 12 Mar. 2010. • Leatherman, D.A., I. Aguayo, and T.M. Mehall. "Mountain Pine Beetle." Colostate.edu.Colorado State University, Apr. 2007. Web. 12 Mar. 2010. • Moscou, Jim. "Beetlemania." How the Pine Beetle is Destroying Colorado Forests. Newsweek, 2008. Web. 27 Apr. 2010. <http://www.newsweek.com/id/148297/ page/2>. • Trofka, Joseph. Interview about Mountain Pine Beetles. Private Residence. 28       Mar. 2010. Interview.